Small block adj. rockers

It' just a redesign where the banana cut spreads oil arcross the high pressure area of the shaft and the bigger hole is about being able to flow more volume the the inside of the shaft.
Of course the volume of the flow is all dependent upon the supply to the top in the first place.
I agree with the banana cut but the bigger hole really can't hurt anything even if it doesn't help anything.

Just my opinion obviously. :D